This is really a collection of parts from other sets to make it easier to print a spool and holder. I removed the hook from the Parametric Filament Spool Mk2 Spool Arm model, and made 3 copies of the arm in 1 model. The hooks that were removed are replaced with the clips from Parametric Filament Spool - Adjustable Hooks. I put 2 of the stands from RepRap RoofTop Spool Stand into 1 model. I also used the spool hub from Parametric Filament Spool Mk2 with axle support. All credit goes to the creator of those sets. I just combined them together to make it easier to print.